1.An ideal gas is placed in an elastic container and is helpat a constant temper

Question

1.An ideal gas is placed in an elastic container and is helpat a constant temperature.    Its pressureis 101.3*10^3 Pa when the volume of the container is 28100 cm^3.find its pressure when the volume of the container is 4900cm^3
2. An ideal gas is placed in an elastic container. its gaugepressure is 6.7 kPa when the volume of the gas is 4.51 m^3 and itstemperature is 20.6 degree C. find its gauge pressure when thevolume of the gas is 3.51 m^3 and its temperature is -100.9 degreeC. 1.An ideal gas is placed in an elastic container and is helpat a constant temperature.    Its pressureis 101.3*10^3 Pa when the volume of the container is 28100 cm^3.find its pressure when the volume of the container is 4900cm^3
2. An ideal gas is placed in an elastic container. its gaugepressure is 6.7 kPa when the volume of the gas is 4.51 m^3 and itstemperature is 20.6 degree C. find its gauge pressure when thevolume of the gas is 3.51 m^3 and its temperature is -100.9 degreeC.

Explanation / Answer

1) intial pressure p1=101.3*103pa             v1= 28100cm3 = 0.0281m3            v2= 4900cm3 = 0.0049m3          T1= T2= constant from the ideal gas eqP1v1/T1 =P2v2/T2 then p2= P1v1/v2 plug values P2 = ---- pa 2) p1= 6.7kpa+101kpa = 107.7kpa because p1 is guase pressure p2= ? v1= 4.51m3 v2= 3.51m3 T1= 20.6+273 = 293.6K T2 = 273-100.9 = 172.1K from the ideal gas eq = p2 =P1V1T2/T1 plug values P2 --------pa plug values P2 --------pa

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